3992969509 has 2 divisors, whose sum is σ = 3992969510. Its totient is φ = 3992969508.

The previous prime is 3992969501. The next prime is 3992969621. The reversal of 3992969509 is 9059692993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3601800225 + 391169284 = 60015^2 + 19778^2 .

It is a cyclic number.

It is not a de Polignac number, because 3992969509 - 2³ = 3992969501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3992969501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996484754 + 1996484755.

It is an arithmetic number, because the mean of its divisors is an integer number (1996484755).

Almost surely, 2^3992969509 is an apocalyptic number.

It is an amenable number.

3992969509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3992969509 is an equidigital number, since it uses as much as digits as its factorization.

3992969509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10628820, while the sum is 61.

The square root of 3992969509 is about 63189.9478477392. The cubic root of 3992969509 is about 1586.4704891615.

The spelling of 3992969509 in words is "three billion, nine hundred ninety-two million, nine hundred sixty-nine thousand, five hundred nine".